I can configure my display setting through "System Settings > Displays"
But I cannot save it to xorg.conf and I don't have a xorg.conf at all in /etc/X11/.
How can I save the current settings into xorg.conf?
Oops, you're quite right. In one version in my brain at least, they all used the same target file - which would seem the most sensible given these concerns.So an excerpt: Intel) ln -sf /etc/X11/xorg.conf.d/display.intel /etc/X11/xorg.conf.d/20-display.conf ;;
Nvidia) ln -sf /etc/X11/xorg.conf.d/display.nvidia /etc/X11/xorg.conf.d/20-display.conf ;;
ATI) ln -sf /etc/X11/xorg.conf.d/